CN107339474A - A kind of hydraulic steering gear integrated security valve - Google Patents
A kind of hydraulic steering gear integrated security valve Download PDFInfo
- Publication number
- CN107339474A CN107339474A CN201610278635.7A CN201610278635A CN107339474A CN 107339474 A CN107339474 A CN 107339474A CN 201610278635 A CN201610278635 A CN 201610278635A CN 107339474 A CN107339474 A CN 107339474A
- Authority
- CN
- China
- Prior art keywords
- valve
- flap
- section
- steering gear
- hydraulic steering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0486—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with mechanical actuating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Safety Valves (AREA)
Abstract
The present invention relates to a kind of hydraulic steering gear integrated security valve, belong to the technical field of hydraulic safe.The valve includes flap and valve seat, and valve seat has the outer face that sectional area is more than inner face, and the inner of valve opening connects with oil return opening, and valve opening connects with oil inlet, and flap has upper extreme position and lower floating position；One end of flap is conical section, the other end is tubing string section, is extension diameter section between conical section and tubing string section, and the taper of conical section is less than the taper of undergauge cone；Spring is housed between flap and valve seat, the valve element with high-low position is inserted in the central through hole of flap；Valve element is formed by tapered end valve core head and with cylindrical section, is necking segment between valve core head and cylindrical section.The present invention organically combines the check valve of original isolating construction with safety valve, the integrated security valve being integrally formed, and the oil circuit processing of hydraulic steering gear housing is obvious to be simplified, and assembling is also more convenient.
Description
Technical field
The present invention relates to a kind of hydraulic steering gear safety valve, especially a kind of safety valve for being integrated with check valve, belong to hydraulic safe technical field.
Background technology
Safety valve and check valve are all the Hydraulic Elements being generally used on hydraulic steering gear.The former is used to protect hydraulic system, the off-load when pressure exceedes and appraises and decides pressure；The latter is typically mounted between the oil inlet of steering gear and oil return opening, hydraulic oil when ensureing hydraulic system normal work can not be from oil return opening reflux to oil inlet, and also there is no oil-feed when oil inlet, running out of steam in particular cases, ensureing that by manpower steering wheel can be pulled --- now require that check valve is more than oil inlet to open because of the pressure of oil return opening.
According to the applicant understood, the safety valve in existing hydraulic steering system and check valve are separate, assemble respectively, and not only making script, just baroque steering gear valve body has been more difficult to process, and assembles very difficult.
The content of the invention
It is an object of the invention to：In view of the above-mentioned problems of the prior art, propose a kind of convenient hydraulic steering gear integrated security valve for manufacturing and assembling.
In order to reach object above, the hydraulic steering gear integrated security valve of the present invention includes the flap at hydraulic steering gear valve body valve opening undergauge cone with central through hole and lived to be inserted in the stifled interior valve seat with centre bore of valve opening outer end oil, there is the valve seat inner face and sectional area to be more than the outer face of inner face, the inner of the valve opening connects with oil return opening, the hole section that the valve opening is corresponded between flap and valve seat connects with oil inlet, and the flap has upper extreme position and lower floating position；One end of the flap is the conical section of neighbouring undergauge cone, the other end is tubing string section, is the extension diameter section of distribution radial direction spill port between the conical section and tubing string section；Spring is housed between the flap and valve seat, the valve element with high-low position that outer end is connected with valve base center hole is inserted in the central through hole of the flap；The valve element is the necking segment of corresponding oil return hole site between the valve core head and cylindrical section by exposing outside flap and external diameter is more than the tapered end valve core head of flap centre bore internal diameter and the cylindrical section of prismatic pair is formed with flap and forms；When the flap is in upper extreme position and the valve element is in low level, the oil return opening blocks with oil inlet；When the flap is in upper extreme position and the valve element is in high-order, the oil return opening connects through flap centre bore, necking segment periphery and spill port with oil inlet；When the flap is in lower floating position, the oil inlet connects with oil return opening.
It is appreciated that in normal work, under the action of the spring, integrated security valve plays check valve, and flap and valve element are respectively at upper extreme position and low level, block oil return opening and oil inlet, that is, ensures that hydraulic oil will not be short-circuited to oil inlet from oil inlet.And when input pressure superpressure, flap is still in upper extreme position, because the area of valve seat outer face is more than inner face, therefore both ends of the surface pressure differential by overcome spring it is preset appraise and decide pressure, it is in valve element and floats up to a high position, oil inlet connects with oil return opening, safety relief.And when oil inlet runs out of steam, the pressure of oil return opening is more than oil inlet, compression is overcome acting force of the spring and is in lower floating position by flap, therefore oil inlet is connected with oil return opening, so as to pull steer direction disk by manpower.
As can be seen here, the present invention organically combines the check valve of original isolating construction with safety valve, the integrated security valve being integrally formed, and the oil circuit processing of hydraulic steering gear housing is obvious to be simplified, and assembling is also more convenient.
Further improve of the invention includes：
The taper of the conical section is less than the taper of undergauge cone；
The spring is arranged between the extension diameter section of the flap and the attic base of valve seat；
The central through hole of the flap is connected valve element by screw thread；
The extension diameter section is uniformly distributed 6 radial direction spill ports.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the cross section structure schematic diagram of flap in Fig. 1 embodiments.
Fig. 3 is Fig. 1 embodiment safety relief status architecture schematic diagrames.
Fig. 4 is Fig. 1 embodiment check valve open mode structural representations.
Embodiment
The hydraulic steering gear of the present embodiment is as shown in Figure 1 with integrated security valve body structure, it can be seen from Fig. 3, Fig. 4, including bore the flap 3 at K1 with central through hole installed in hydraulic steering gear valve body F valve opening K undergauges and live and be inserted in the stifled 6 interior valve seats 4 with centre bore of valve opening outer end oil.Valve seat 4 has inner face and the outer face of attic base 4-1 formation, and because the cylindrical pipe diameter being connected with outer face is less than inner circle pipe diameter, therefore the sectional area of the outer face of valve seat 4 is more than the sectional area of inner face.Valve opening K the inner connects with oil return inlet T, and the hole section that valve opening K is corresponded between flap 3 and valve seat 4 connects with oil inlet P.
One end of flap 3 is that neighbouring valve opening K undergauges cone K1 conical section 3-1, the other end are tubing string section 3-3, it is the extension diameter section 3-2 that 6 radial direction spill port 3-4 are uniformly distributed shown in Fig. 2 between conical section 3-1 and tubing string section 3-3, when experiment proof spill port is 6, best results.Conical section 3-1 taper is less than undergauge cone K1 taper.Flap 3 has the cone of closing undergauge shown in Fig. 3 K1 upper extreme position, and departs from the lower floating position of upper extreme position.
Spring 2 is housed between the extension diameter section 3-2 of flap 3 and the attic base 4-1 of valve seat 4.The valve element 1 with high-low position that outer end is connected with valve base center hole by screw thread is inserted in the central through hole of flap 3, due to threaded connection, therefore the pretightning force of spring 2 can be conveniently adjusted.
Valve element 1 is the necking segment 1-2 of corresponding spill port 3-4 positions between valve core head 1-1 and cylindrical section 1-3 by exposing outside flap 3 and external diameter is more than the tapered end valve core head 1-1 of the centre bore internal diameter of flap 3 and the cylindrical section 1-3 of prismatic pair is formed with flap and forms.
As shown in Figure 3, in normal work, under the action of the spring, flap is in upper extreme position due to the pressure of oil return opening less than oil inlet, valve element is because the pressure differential of valve seat both ends of the surface is less than acting force of the spring and is in low level, oil return opening mutually blocks with oil inlet, and hydraulic oil will not be short-circuited to oil inlet from oil inlet, and the integrated security valve of the present embodiment plays a part of check valve.When the too high superpressure of input pressure, flap is still in upper extreme position due to the pressure of oil return opening less than oil inlet, and valve element due to valve seat both ends of the surface pressure differential be more than spring it is preset appraise and decide pressure, it will float in the high position shown in Fig. 4, now oil return opening connects through flap centre bore, necking segment periphery and spill port with oil inlet, oil inlet and oil return opening short circuit safety relief.When oil inlet runs out of steam, the pressure of oil return opening is more than oil inlet, flap will be overcome acting force of the spring by buffer brake and be in lower floating position, oil inlet and the direct passage of oil return opening are opened, so as to pull steer direction disk by manpower, realizes manual steering.
The present embodiment not only organically combines check valve and safety valve, and can realize manual steering, and its is compact-sized, reliable operation.
Claims (5)
- A kind of 1. hydraulic steering gear integrated security valve, it is characterised in that：Including having the flap of central through hole at hydraulic steering gear valve body valve opening undergauge cone（3）Blocked up with the valve opening outer end oil living that is inserted in（6）The interior valve seat with centre bore（4）, the valve seat has inner face and sectional area is more than the outer face of inner face, and the inner of the valve opening connects with oil return opening, and the hole section that the valve opening is corresponded between flap and valve seat connects with oil inlet, and the flap has upper extreme position and lower floating position；One end of the flap is the conical section of neighbouring undergauge cone（3-1）, the other end be tubing string section（3-3）, it is distribution radial direction spill port between the conical section and tubing string section（3-4）Extension diameter section（3-2）；Spring is housed between the flap and valve seat（2）, the valve element with high-low position that outer end is connected with valve base center hole is inserted in the central through hole of the flap（1）；The valve element is by exposing outside flap and external diameter is more than the tapered end valve core head of flap centre bore internal diameter（1-1）And the cylindrical section of prismatic pair is formed with flap（1-3）Form, be the necking segment of corresponding oil return hole site between the valve core head and cylindrical section（1-2）；When the flap is in upper extreme position and the valve element is in low level, the oil return opening blocks with oil inlet；When the flap is in upper extreme position and the valve element is in high-order, the oil return opening connects through flap centre bore, necking segment periphery and spill port with oil inlet；When the flap is in lower floating position, the oil inlet connects with oil return opening.
- A kind of 2. hydraulic steering gear integrated security valve according to claim 1, it is characterised in that：The taper of the conical section is less than the taper of undergauge cone.
- A kind of 3. hydraulic steering gear integrated security valve according to claim 2, it is characterised in that：The spring is arranged between the extension diameter section of the flap and the attic base of valve seat.
- A kind of 4. hydraulic steering gear integrated security valve according to claim 3, it is characterised in that：The central through hole of the flap is connected valve element by screw thread.
- A kind of 5. hydraulic steering gear integrated security valve according to claim 4, it is characterised in that：The extension diameter section is uniformly distributed 6 radial direction spill ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610278635.7A CN107339474A (en) | 2016-05-03 | 2016-05-03 | A kind of hydraulic steering gear integrated security valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610278635.7A CN107339474A (en) | 2016-05-03 | 2016-05-03 | A kind of hydraulic steering gear integrated security valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107339474A true CN107339474A (en) | 2017-11-10 |
Family
ID=60221833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610278635.7A Pending CN107339474A (en) | 2016-05-03 | 2016-05-03 | A kind of hydraulic steering gear integrated security valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107339474A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671520A (en) * | 2019-10-12 | 2020-01-10 | 段井胜 | One-way pressure reducing valve with safety function |
| CN111120701A (en) * | 2019-12-25 | 2020-05-08 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Low pressure maintaining valve with manual pressure relief function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH106950A (en) * | 1996-06-20 | 1998-01-13 | Tokico Ltd | Hydraulic control valve |
| CN101201070A (en) * | 2007-11-29 | 2008-06-18 | 宁波合力集团股份有限公司 | One-way high-pressure limiting valve |
| CN201220661Y (en) * | 2007-09-19 | 2009-04-15 | 德尔菲技术公司 | Vehicle hydraulic system with safety valve |
| CN202091586U (en) * | 2011-05-31 | 2011-12-28 | 梅锦月 | One-way pressure-limiting valve |
| CN205618748U (en) * | 2016-05-03 | 2016-10-05 | 镇江液压股份有限公司 | Hydrostatic steering unit is with integrated relief valve |
-
2016
- 2016-05-03 CN CN201610278635.7A patent/CN107339474A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH106950A (en) * | 1996-06-20 | 1998-01-13 | Tokico Ltd | Hydraulic control valve |
| CN201220661Y (en) * | 2007-09-19 | 2009-04-15 | 德尔菲技术公司 | Vehicle hydraulic system with safety valve |
| CN101201070A (en) * | 2007-11-29 | 2008-06-18 | 宁波合力集团股份有限公司 | One-way high-pressure limiting valve |
| CN202091586U (en) * | 2011-05-31 | 2011-12-28 | 梅锦月 | One-way pressure-limiting valve |
| CN205618748U (en) * | 2016-05-03 | 2016-10-05 | 镇江液压股份有限公司 | Hydrostatic steering unit is with integrated relief valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671520A (en) * | 2019-10-12 | 2020-01-10 | 段井胜 | One-way pressure reducing valve with safety function |
| CN110671520B (en) * | 2019-10-12 | 2020-11-06 | 广东泰恩流体控制设备有限公司 | One-way pressure reducing valve with safety function |
| CN111120701A (en) * | 2019-12-25 | 2020-05-08 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Low pressure maintaining valve with manual pressure relief function |
| CN111120701B (en) * | 2019-12-25 | 2022-07-05 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Low pressure maintaining valve with manual pressure relief function |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171110 |
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| WD01 | Invention patent application deemed withdrawn after publication |